javascript

JavaScript数组遍历方法总结

常见方法

for 语句

代码:

1
2
3
4
var arr = [1,2,4,6]
for(var i = 0, len = arr.length; i < len; i++){
    console.log(arr[i])
}

这是标准for循环的写法也是最传统的语句，字符串也支持，定义一个变量i作为索引，以跟踪访问的位置，len是数组的长度，条件就是i不能超过len。

Read More

php

使用Guzzle执行HTTP请求

Guzzle是一个PHP的HTTP客户端，用来轻而易举地发送请求，并集成到我们的WEB服务上。Guzzle提供了简单的接口，构建查询语句、POST请求、分流上传下载大文件、使用HTTP cookies、上传JSON数据等等。

Read More

nginx

Nginx 504报错，PHP-FPM无响应的问题

问题

测试环境，压测接口中间件时遇到报错Nginx 504，查询nginx日志

1
2
3
2017/11/21 15:20:15 [error] 26954#0: *1835 connect() failed (111: Connection refused) while connecting to upstream, client: 192.168.1.46, server: 192.168.23.95, request: "POST /screenInterface/FunctionByTime.php HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "192.168.23.95:6010", referrer: "http://192.168.23.95:6010/screen2/"
2017/11/21 15:20:15 [error] 26954#0: *1821 connect() failed (111: Connection refused) while connecting to upstream, client: 192.168.1.46, server: 192.168.23.95, request: "POST /screenInterface/FUnctionByMobile.php HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "192.168.23.95:6010", referrer: "http://192.168.23.95:6010/screen2/"
2017/11/21 15:20:15 [error] 26954#0: *1836 connect() failed (111: Connection refused) while connecting to upstream, client: 192.168.1.46, server: 192.168.23.95, request: "POST /screenInterface/LeftGraph.php HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "192.168.23.95:6010", referrer: "http://192.168.23.95:6010/screen2/"

Read More